Remove warning from CloningPodSystem (#41246)

* Change raw string to protoId

* Address comment

Content.Server/Cloning/CloningPodSystem.cs

@@ -29,6 +29,7 @@ using Robust.Shared.Containers;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
+using Content.Shared.Chemistry.Reagent;
 
 namespace Content.Server.Cloning;
 
@@ -58,6 +59,7 @@ public sealed class CloningPodSystem : EntitySystem
     public readonly Dictionary<MindComponent, EntityUid> ClonesWaitingForMind = new();
     public readonly ProtoId<CloningSettingsPrototype> SettingsId = "CloningPod";
     public const float EasyModeCloningCost = 0.7f;
+    private static readonly ProtoId<ReagentPrototype> BloodId = "Blood";
 
     public override void Initialize()
     {
@@ -302,7 +304,7 @@ public sealed class CloningPodSystem : EntitySystem
         while (i < 1)
         {
             tileMix?.AdjustMoles(Gas.Ammonia, 6f);
-            bloodSolution.AddReagent("Blood", 50);
+            bloodSolution.AddReagent(BloodId, 50);
             if (_robustRandom.Prob(0.2f))
                 i++;
         }